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Honghui Zhang9ca340c2016-06-08 17:50:58 +08001/*
2 * Copyright (c) 2015-2016 MediaTek Inc.
3 * Author: Honghui Zhang <honghui.zhang@mediatek.com>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 */
14
15#ifndef _MTK_IOMMU_H_
16#define _MTK_IOMMU_H_
17
18#include <linux/clk.h>
19#include <linux/component.h>
20#include <linux/device.h>
21#include <linux/io.h>
22#include <linux/iommu.h>
23#include <linux/list.h>
24#include <linux/spinlock.h>
25#include <soc/mediatek/smi.h>
26
27#include "io-pgtable.h"
28
29struct mtk_iommu_suspend_reg {
30 u32 standard_axi_mode;
31 u32 dcm_dis;
32 u32 ctrl_reg;
33 u32 int_control0;
34 u32 int_main_control;
35};
36
Honghui Zhang9ca340c2016-06-08 17:50:58 +080037struct mtk_iommu_domain;
38
39struct mtk_iommu_data {
40 void __iomem *base;
41 int irq;
42 struct device *dev;
43 struct clk *bclk;
44 phys_addr_t protect_base; /* protect memory base */
45 struct mtk_iommu_suspend_reg reg;
46 struct mtk_iommu_domain *m4u_dom;
47 struct iommu_group *m4u_group;
48 struct mtk_smi_iommu smi_imu; /* SMI larb iommu info */
49 bool enable_4GB;
Joerg Roedelb16c0172017-02-03 12:57:32 +010050
51 struct iommu_device iommu;
Honghui Zhang9ca340c2016-06-08 17:50:58 +080052};
53
Joerg Roedel9a8a5dc2016-08-09 15:46:46 +020054static inline int compare_of(struct device *dev, void *data)
Honghui Zhang9ca340c2016-06-08 17:50:58 +080055{
56 return dev->of_node == data;
57}
58
Russell King00c7c812016-10-19 11:30:34 +010059static inline void release_of(struct device *dev, void *data)
60{
61 of_node_put(data);
62}
63
Joerg Roedel9a8a5dc2016-08-09 15:46:46 +020064static inline int mtk_iommu_bind(struct device *dev)
Honghui Zhang9ca340c2016-06-08 17:50:58 +080065{
66 struct mtk_iommu_data *data = dev_get_drvdata(dev);
67
68 return component_bind_all(dev, &data->smi_imu);
69}
70
Joerg Roedel9a8a5dc2016-08-09 15:46:46 +020071static inline void mtk_iommu_unbind(struct device *dev)
Honghui Zhang9ca340c2016-06-08 17:50:58 +080072{
73 struct mtk_iommu_data *data = dev_get_drvdata(dev);
74
75 component_unbind_all(dev, &data->smi_imu);
76}
77
78#endif